Motorcycle muffler



FIG. 1 is a front elevational view of a motorcycle muffler showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof,

FIG. 4 is a right side elevational view thereof,

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is an enlarged view of FIG. 3 shown removed from most of the unclaimed environment.

The broken lines immediately adjacent to the nearly horizontal surface represent the boundary of the claim. The broken lines located within the cavity of the structure represent a portion of the structure that forms no part of the claim. 

The ornamental design for a motorcycle muffler, as shown and described. 